Method for rapidly detecting remaining use times of battery

A battery and fast technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of rising battery discharge temperature, high battery heating, and reducing battery cycle life, so as to avoid loss of working hours and waste of batteries Effect

Active Publication Date: 2015-10-28
JIANGSU BEIXIN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The internal resistance of the battery is an important characteristic parameter of the battery. It is an important parameter to measure the operating state of the battery and the remaining service life of the battery. The greater the internal resistance of the battery, the greater the internal heat of the battery will be caused when the large current is discharged, and the battery will be discharged. As the temperature rises, many side chemical reactions will occur in the battery, thereby reducing the cycle life of the battery

Method used

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  • Method for rapidly detecting remaining use times of battery

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Embodiment 1

[0025] The invention discloses a method for rapidly detecting the remaining usage times of a battery, which comprises the following steps:

[0026] A. Measure the internal resistance of the same type of battery under different cycle times of the battery at the same room temperature, and draw a graph of the relationship between the internal resistance and the cycle times of the battery;

[0027] B. Divide the above graph into several stages and measure the internal resistance of the same type of battery used;

[0028] C. Judging the corresponding stage of the battery according to the internal resistance measured in the previous step;

[0029] D. According to the stage in which the battery is judged, the number of cycles in which the battery is located and the number of remaining cycles can be quickly detected.

[0030] The stages described in steps B, C and D are three, including the initial period, the stabilizer and the final period. resistance showed a sharp upward tre...

Embodiment 2

[0038] The invention also discloses another method for quickly detecting the remaining number of times of use of the battery, which includes the following steps:

[0039] S1. Measure the current and voltage of the same type of battery at the same room temperature, so that the voltage changes constantly in the direction of charge and discharge, and obtain a set of voltage △V at equal intervals, and integrate the current in each △V time interval to obtain a set ΔQ;

[0040] S2. Calculate △V / △Q, and make a graph of the relationship between △V / △Q and the number of cycles of the battery;

[0041] S3, judging the corresponding stage of the battery according to the internal resistance measured in the previous step;

[0042] S4. The number of cycles the battery is in and the remaining number of cycles can be quickly detected according to the stage in which the battery is judged.

[0043] The stages described in steps S2, S3 and S4 are three, including the initial stage, the stabiliz...

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Abstract

The invention discloses a method for rapidly detecting remaining use times of batteries, and relates to the technical field of batteries. The method is based on the relation between a battery internal resistance and cycle times, can deduct the cycle times corresponding to the battery internal resistance according to the measured internal resistance of the battery, and comprises the steps of: A, measuring internal resistances of batteries of the same model with different cycle times at the same indoor temperature, and drawing a curve chart of relation between the internal resistances and cycle times of the batteries; B, dividing the curve chart into a plurality of stages and measuring the internal resistances of the adopted batteries of the same model; C, judging the corresponding stage in which the batteries are positioned according to the internal resistances measured in the previous step; D, and rapidly detecting the cycle times of the batteries and the remaining cycle times according to the judged stage in which the batteries are positioned. The method for rapidly detecting remaining use times of the batteries has high reliability, and is especially suitable for detecting batteries in mass production or during the process of using.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for quickly detecting the remaining battery usage times. Background technique [0002] The internal resistance of the battery is an important characteristic parameter of the battery. It is an important parameter to measure the operating state of the battery and the remaining service life of the battery. The greater the internal resistance of the battery, the greater the internal heat of the battery will be caused when the large current is discharged, and the battery will be discharged. As the temperature rises, many secondary chemical reactions will occur in the battery, thereby reducing the cycle life of the battery. [0003] The internal resistance of the battery is not a constant, but a variable that changes with time during charging and discharging. When the battery is in different states of charge, its internal resistance is different, and its internal resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 冯玉川李铮杨帆南策文
Owner JIANGSU BEIXIN NEW ENERGY TECH CO LTD
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